<template>
  <div class="icons">
    <swiper :options="swiperOption">
      <swiper-slide v-for="(page,index) of pages" :key="index">
        <div class="icon" v-for="item of page" :key="item.id">
          <div class="icon-img">
            <img class="icon-img-content" :src="item.imgUrl">
          </div>
          <P class="icon-desc">{{item.desc}}</P>
        </div>
      </swiper-slide>
    </swiper>
  </div>
</template>

<script>
export default {
  name: "HomeIcons",
  props: {
    list: Array
  },
  data() {
    return {
      swiperOption: {
        //  swiper3
        pagination: ".swiper-pagination",
        autoplay: false
      }
    };
  },
  computed: {
    pages() {
      const pages = [];
      this.list.forEach((item, index) => {
        const page = Math.floor(index / 8);//0,1
        if (!pages[page]) {//如果pages[0] ==空的话,则创建一个   这个分页就是利用二位数组
          pages[page] = [];
        }
        pages[page].push(item);
      });
      return pages;
    }
  }
};
</script>

<style lang='stylus' scoped>
@import '~styles/varibles.styl'
@import '~styles/mixins.styl'
.icons >>> .swiper-container {
  height: 0;
  overflow: hidden;
  padding-bottom: 50%;
}
.icons
  margin-top: .2rem
.icon {
  position: relative;
  overflow: hidden;
  float: left;
  width: 25%;
  padding-bottom: 25%;

  .icon-img {
    position: absolute;
    top: 0;
    left: 0;
    right: 0;
    bottom: 0.44rem;
    box-sizing: border-box;
    padding: 0.2rem;

    .icon-img-content {
      display: block;
      height: 100%;
      margin: 0 auto;
    }
  }

  .icon-desc {
    position: absolute;
    left: 0;
    right: 0;
    bottom: 0;
    height: 0.44rem;
    line-height: 0.44rem;
    text-align: center;
    ellipsis();
    overflow: hidden;
    white-space: nowrap;
    text-overflow: ellipsis;
  }
}
</style>
